A nurse in an emergency department is reviewing a client's ECG reading.
Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?
Prolonged PR intervals.
Nondiscernible P waves.
More P waves than QRS complexes.
No correlation between P and QRS waves.
The Correct Answer is A
First-degree heart block is a type of atrioventricular (AV) block that involves the consistent prolongation of the PR interval (defined as >0.20 seconds) due to delayed conduction via the atrioventricular node.
This is seen on an ECG as a PR interval greater than 200 ms in length.
Choice B: Nondiscernible P waves are not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice C: More P waves than QRS complexes is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice D: No correlation between P and QRS waves is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The nurse should include this intervention in the plan of care because it can help relieve pressure on the reddened areas over the client’s bony prominences and prevent the development of pressure injuries.
Choice A is incorrect because applying an occlusive dressing to intact skin over bony prominences is not an appropriate intervention for preventing pressure injuries.
Choice B is incorrect because turning and repositioning the client every 4 hours may not be frequent enough to prevent the development of pressure injuries.
The client should be turned and repositioned more frequently, at least every 2 hours.
Choice D is incorrect because massaging reddened areas over bony prominences is not recommended as it can cause further damage to the skin and underlying tissues.
Correct Answer is C
Explanation
Wearing a lead apron can help protect the nurse from radiation exposure while providing care to a client receiving internal radiation therapy.
Choice A is incorrect because visitors may need to limit their contact with the client and follow specific safety precautions.
Choice B is incorrect because a dosimeter film badge is worn by the nurse to measure radiation exposure, not placed on the client’s door.
Choice D is incorrect because the door to the client’s room may need to be kept closed as a safety precaution 2.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today